Hete I'ocera from Costa llica. 1)57 



tlie costal margin of liliul \y\\\^i is coarsely irrorated with 

 fuscous grey. 



Expanse 11 mm. 



Hub. Guapiles. 



Subfamily Litrosianm. 

 Macroptila monstralis, sp. n. 



S . Frons brown. Vertex, collar, and thorax grey. Ab- 

 domen whitish. Legs whitish, the fore tibia above with 

 ridge of long ochreous hairs. Fore wings light grey, be- 

 coming dark grey on inner margin, costal margin and veins 

 above 3 white ; the extreme cosla finely ochreous. Hind 

 wings : the inner area broadly white ; the costal portion 

 above median light brown ; the outer margin from vein 2 to 

 apex shaded with dark grey ; a small spot of androconia in 

 cell at base. 



Expanse 30 mm. 



Uab. 8ixola. 



Fore wings with veins 3 and 1 on rather long stalk ; G 

 from near upper angle of cell ; 7-9 stalked; 10 free. Hind 

 wings with 3 and 4 from lower angle; 5 absent or on long 

 stalk with 4 ; Band 7 from upper angle apart ; costal margin 

 straight and with a projecting lobe before apex. 



Macroptila nubecula, sp. n. 



(J. Head, collar, and thorax lilacine grey, the frons paler. 

 Abdomen bufF-white. Fore wnngs : costal margin, cell, and 

 from vein 3 to apex silvery white, faintly tinged with buff; 

 below cell lilacine buff, shading to lilacine grey above and 

 below submedian. Hind wings faintly tinged with buff and 

 shaded with grey at apex ; the cell filled with a large patch 

 of dark brown androconia, jjartly covered by an upturned 

 ridge of long hairs on median vein. Underneath whitish, 

 the costal margins yellowish buff. 



Expanse 32 mm. 



Hah. Sixola, Tuis, Esperanza. 



This species will fall into a new secti-on. Fore wing with 

 cell narrow, the median arched ; vein 6 from well below 

 angle of cell; 7-9 stalked; 10 free. Hind wing with a large 

 patch of androconia in cell ; veins 3-.5 stalked ; veins G and 7 

 stalked, downturned ; the costal margin concave before apex. 



Aptilosia, gen. no v. 

 Proboscis fully developed. Antennre of male with short 



